writer：Wei‐Chao Chen, Hao‐Long Li, Xin‐Long Wang,* Kui‐Zhan Shao, Zhong‐Min Su,* En‐Bo Wang
keywords：Polyoxometalate
source：期刊
specific source：Chemistry - A European Journal 2013, 19, 11007-11015.
Issue time：2013年

A versatile one-pot strategy was employed to synthesize three cerium(III)-stabilized polyoxotungstates nanoclusters by combining cerium linkers and SeO₃^2?/TeO₃^2? heteroanion templates: K₃₂Na₁₆[{(XO₃)W₁₀O₃₄}₈{Ce₈(H₂O)₂₀}(WO₂)₄- (W₄O₁₂)]?n?H₂O [X=Se, n=81 (1); X=Te, n=114 (2)] and K₁₂Na₂₂[{(SeO₃)W₁₀O₃₄}₈{Ce₈(H₂O)₂₀}(WO₂)₄- {(W₄O₆)Ce₄(H₂O)₁₄(SeO₃)₄(NO₃)₂}]? 79?H₂O (3), which are the first lanthanide-containing polyoxotungstates with selenium or tellurium heteroatoms. The three clusters were characterized by single-crystal X-ray structure analysis, IR spectroscopy, thermogravimetric/differential thermal analysis, UV/Vis spectroscopy, ESI-MS, and X-ray photoelectron spectroscopy. Their electrochemical, photoluminescence, and magnetic properties were investigated. Their behavior in solution was studied by transmission electron microscopy, which showed that their single polyoxoanions assemble into intact, uniform-sized, purely inorganic hollow spheres in dilute water/acetone solution.

http://onlinelibrary.wiley.com/doi/10.1002/chem.201300615/abstract